/*
	jQuery Coda-Slider v1.1 - http://www.ndoherty.com/coda-slider
	
	Copyright (c) 2007 Niall Doherty
	
	Inspired by the clever folks at http://www.panic.com/coda
	Many thanks to Gian Carlo Mingati. Coda-Slider is a heavily modified version of his slideViewer, which can be found at  http://www.gcmingati.net/wordpress/wp-content/lab/jquery/imagestrip/imageslide-plugin.html
	
	Requirements:
	-  jQuery 1.2 ... available via  http://www.jquery.com
	-  jQuery easing plugin (1.2) ... available via  http://gsgd.co.uk/sandbox/jquery/easing/
	- jQuery easing compatability plugin ... available via  http://gsgd.co.uk/sandbox/jquery/easing/
	- CSS included in index.html
*/

jQuery(function(){
    jQuery("div.csw").prepend("<p class='loading'>Loading...<br /><img src='/resources/images/ajax-loader.gif' alt='loading...'/ ></p>");
});
var j = 0;
jQuery.fn.codaSlider = function(settings) {
    settings = jQuery.extend({
        easeFunc: "expoinout",
        easeTime: 750,
        toolTip: false
    }, settings);
    return this.each(function(){
        var container = jQuery(this);
        // Remove the preloader gif...
        container.find("p.loading").remove();
        // Self-explanatory...
        container.removeClass("csw").addClass("stripViewer");
        // Get the width of a panel, set from CSS...
        var panelWidth = container.find("div.panel").width();
        // panelCount gives us a count of the panels in the container...
        var panelCount = container.find("div.panel").size();
        // Calculate the width of all the panels when lined up end-to-end...
        var stripViewerWidth = panelWidth*panelCount;
        // Use the above width to specify the CSS width for the panelContainer element...
        container.find("div.panelContainer").css("width" , stripViewerWidth);
        // Set the navWidth as a multiple of panelCount to account for margin-right on each li
        var navWidth = panelCount*2;
		
        // Specify the current panel.
        // If the loaded URL has a hash (cross-linking), we're going to use that hash to give the slider a specific starting position...
        if (location.hash && parseInt(location.hash.slice(1)) <= panelCount) {
            var cPanel = parseInt(location.hash.slice(1));
            var cnt = - (panelWidth*(cPanel - 1));
            jQuery(this).find("div.panelContainer").css({
                left: cnt
            });
        // Otherwise, we'll just set the current panel to 1...
        } else { 
            var cPanel = 1;
        };
		
        // Create appropriate nav
        container.each(function(i) {
			
            // Create the Left and Right arrows
            jQuery(this).before("<div class='stripNavL' id='stripNavL" + j + "'><a href='#'>Left</a><\/div>");
            jQuery(this).after("<div class='stripNavR' id='stripNavR" + j + "'><a href='#'>Right</a><\/div>");
			
            // Create the Tabs
            jQuery(this).before("<div class='stripNav' id='stripNav" + j + "'><ul><\/ul><\/div>");
            jQuery(this).find("div.panel").each(function(n) {
                jQuery("div#stripNav" + j + " ul").append("<li class='tab" + (n+1) + "'><a href='#" + (n+1) + "'>" + jQuery(this).attr("title") + "<\/a><\/li>");												
            });
			
            // Tab nav
            jQuery("div#stripNav" + j + " a").each(function(z) {
                // Figure out the navWidth by adding up the width of each li
                navWidth += jQuery(this).parent().width();
                // What happens when a nav link is clicked
                jQuery(this).bind("click", function() {
                    jQuery(this).addClass("current").parent().parent().find("a").not(jQuery(this)).removeClass("current"); // wow!
                    var cnt = - (panelWidth*z);
                    cPanel = z + 1;
                    jQuery(this).parent().parent().parent().next().find("div.panelContainer").animate({
                        left: cnt
                    }, settings.easeTime, settings.easeFunc);
                });
            });
			
            // Left nav
            jQuery("div#stripNavL" + j + " a").click(function(){
                if (cPanel == 1) {
                    var cnt = - (panelWidth*(panelCount - 1));
                    cPanel = panelCount;
                    jQuery(this).parent().parent().find("div.stripNav a.current").removeClass("current").parent().parent().find("li:last a").addClass("current");
                } else {
                    cPanel -= 1;
                    var cnt = - (panelWidth*(cPanel - 1));
                    jQuery(this).parent().parent().find("div.stripNav a.current").removeClass("current").parent().prev().find("a").addClass("current");
                };
                jQuery(this).parent().parent().find("div.panelContainer").animate({
                    left: cnt
                }, settings.easeTime, settings.easeFunc);
                // Change the URL hash (cross-linking)...
                location.hash = cPanel;
                return false;
            });
			
            // Right nav
            jQuery("div#stripNavR" + j + " a").click(function(){
                if (cPanel == panelCount) {
                    var cnt = 0;
                    cPanel = 1;
                    jQuery(this).parent().parent().find("div.stripNav a.current").removeClass("current").parent().parent().find("a:eq(0)").addClass("current");
                } else {
                    var cnt = - (panelWidth*cPanel);
                    cPanel += 1;
                    jQuery(this).parent().parent().find("div.stripNav a.current").removeClass("current").parent().next().find("a").addClass("current");
                };
                jQuery(this).parent().parent().find("div.panelContainer").animate({
                    left: cnt
                }, settings.easeTime, settings.easeFunc);
                // Change the URL hash (cross-linking)...
                location.hash = cPanel;
                return false;
            });
			
            // Same-page cross-linking
            jQuery("a.cross-link").click(function(){
                jQuery(this).parents().find(".stripNav ul li a:eq(" + (parseInt(jQuery(this).attr("href").slice(1)) - 1) + ")").trigger('click');
            });	
			
            // Set the width of the nav using the navWidth figure we calculated earlier. This is so the nav can be centred above the slider
            jQuery("div#stripNav" + j).css("width" , navWidth);
			
            // Specify which tab is initially set to "current". Depends on if the loaded URL had a hash or not (cross-linking).
            if (location.hash && parseInt(location.hash.slice(1)) <= panelCount) {
                jQuery("div#stripNav" + j + " a:eq(" + (location.hash.slice(1) - 1) + ")").addClass("current");
            } else {
                jQuery("div#stripNav" + j + " a:eq(0)").addClass("current");
            }
			
        });
		
        j++;
    });
};